Iowa

• Adair 19001
  393 taxa Open ↗
• Adams 19003
  200 taxa Open ↗
• Allamakee 19005
  118 taxa Open ↗
• Appanoose 19007
  38 taxa Open ↗
• Audubon 19009
  225 taxa Open ↗
• Benton 19011
  21 taxa Open ↗
• Black Hawk 19013
  33 taxa Open ↗
• Boone 19015
  146 taxa Open ↗
• Bremer 19017
  24 taxa Open ↗
• Buchanan 19019
  16 taxa Open ↗

Showing 151–200 of 2,225.

• 
  Arenaria serpyllifolia L. Introduced ARSE2

  thymeleaf sandwort · Caryophyllaceae 1 county
• 
  Argentina anserina (L.) Rydb. Native ARAN7

  silverweed cinquefoil · Rosaceae 2 counties
• 
  Arisaema dracontium (L.) Schott Native ARDR3

  green dragon · Araceae 10 counties
• 
  Arisaema triphyllum (L.) Schott Native ARTR

  Jack in the pulpit · Araceae 20 counties
• 
  Arisaema triphyllum (L.) Schott ssp. triphyllum Native ARTRT3

  Jack in the pulpit · Araceae 6 counties
• 
  Aristida basiramea Engelm. ex Vasey Native ARBA2

  forked threeawn · Poaceae 16 counties
• 
  Aristida dichotoma Michx. Native ARDI4

  churchmouse threeawn · Poaceae 16 counties
• 
  Aristida dichotoma Michx. var. curtissii A. Gray Native ARDIC

  Curtis' threeawn · Poaceae 11 counties
• 
  Aristida dichotoma Michx. var. dichotoma Native ARDID

  churchmouse threeawn · Poaceae 5 counties
• 
  Aristida longespica Poir. Native ARLO16

  slimspike threeawn · Poaceae 6 counties
• 
  Aristida longespica Poir. var. longespica Native ARLOL3

  slimspike threeawn · Poaceae 1 county
• 
  Aristida oligantha Michx. Native AROL

  prairie threeawn · Poaceae 42 counties
• 
  Aristida purpurea Nutt. Native ARPU9

  purple threeawn · Poaceae 8 counties
• 
  Aristida purpurea Nutt. var. longiseta (Steud.) Vasey Native ARPUL

  Fendler threeawn · Poaceae 8 counties
• 
  Aristida tuberculosa Nutt. Native ARTU

  seaside threeawn · Poaceae 3 counties
• 
  Armoracia rusticana G. Gaertn., B. Mey. & Scherb. Introduced ARRU4

  horseradish · Brassicaceae 8 counties
• 
  Arnoglossum atriplicifolium (L.) H. Rob. Native ARAT

  pale Indian plantain · Asteraceae 8 counties
• 
  Arnoglossum plantagineum Raf. Native ARPL4

  groovestem Indian plantain · Asteraceae 21 counties
• 
  Arnoglossum reniforme (Hook.) H. Rob. Native ARRE6

  great Indian plantain · Asteraceae 2 counties
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl Introduced AREL3

  tall oatgrass · Poaceae 2 counties
• 
  Artemisia annua L. Introduced ARAN3

  sweet sagewort · Asteraceae 1 county
• 
  Artemisia biennis Willd. Both ARBI2

  biennial wormwood · Asteraceae 14 counties
• 
  Artemisia biennis Willd. var. biennis Introduced ARBIB

  biennial wormwood · Asteraceae 14 counties
• 
  Artemisia campestris L. Native ARCA12

  field sagewort · Asteraceae 8 counties
• 
  Artemisia campestris L. ssp. caudata (Michx.) H.M. Hall & Clem. Native ARCAC

  field sagewort · Asteraceae 7 counties
• 
  Artemisia cana Pursh Native ARCA13

  silver sagebrush · Asteraceae 1 county
• 
  Artemisia cana Pursh ssp. cana Native ARCAC5

  silver sagebrush · Asteraceae 1 county
• 
  Artemisia dracunculus L. Native ARDR4

  tarragon · Asteraceae 7 counties
• 
  Artemisia filifolia Torr. Native ARFI2

  sand sagebrush · Asteraceae 1 county
• 
  Artemisia frigida Willd. Native ARFR4

  prairie sagewort · Asteraceae 1 county
• 
  Artemisia longifolia Nutt. Native ARLO7

  longleaf wormwood · Asteraceae 1 county
• 
  Artemisia ludoviciana Nutt. Both ARLU

  white sagebrush · Asteraceae 32 counties
• 
  Artemisia ludoviciana Nutt. ssp. ludoviciana Native ARLUL2

  white sagebrush · Asteraceae 32 counties
• 
  Aruncus dioicus (Walter) Fernald Both ARDI8

  bride's feathers · Rosaceae 2 counties
• 
  Asarum canadense L. Native ASCA

  Canadian wildginger · Aristolochiaceae 13 counties
• 
  Asclepias amplexicaulis Sm. Native ASAM

  clasping milkweed · Asclepiadaceae 11 counties
• 
  Asclepias hirtella (Pennell) Woodson Native ASHI

  green milkweed · Asclepiadaceae 5 counties
• 
  Asclepias incarnata L. Native ASIN

  swamp milkweed · Asclepiadaceae 31 counties
• 
  Asclepias incarnata L. ssp. incarnata Native ASINI

  swamp milkweed · Asclepiadaceae 31 counties
• 
  Asclepias lanuginosa Nutt. Native ASLA3

  sidecluster milkweed · Asclepiadaceae 5 counties
• 
  Asclepias meadii Torr. ex A. Gray Native ASME

  Mead's milkweed · Asclepiadaceae 4 counties
• 
  Asclepias ovalifolia Decne. Native ASOV

  oval-leaf milkweed · Asclepiadaceae 4 counties
• 
  Asclepias purpurascens L. Native ASPU2

  purple milkweed · Asclepiadaceae 17 counties
• 
  Asclepias quadrifolia Jacq. Native ASQU

  fourleaf milkweed · Asclepiadaceae 1 county
• 
  Asclepias speciosa Torr. Native ASSP

  showy milkweed · Asclepiadaceae 5 counties
• 
  Asclepias sullivantii Engelm. ex A. Gray Native ASSU3

  prairie milkweed · Asclepiadaceae 18 counties
• 
  Asclepias syriaca L. Native ASSY

  common milkweed · Asclepiadaceae 25 counties
• 
  Asclepias tuberosa L. Native ASTU

  butterfly milkweed · Asclepiadaceae 21 counties
• 
  Asclepias tuberosa L. ssp. interior Woodson Native ASTUI

  butterfly milkweed · Asclepiadaceae 21 counties
• 
  Asclepias verticillata L. Native ASVE

  whorled milkweed · Asclepiadaceae 38 counties